When I deadlift -- my favorite lift in the whole wide world, it may look like I am doing far more reps than I should. However, it really just depends on the weight you can handle, and what your personal goals are. I've gone through so many different powerlifting programs. Some required that I lifted no more than three reps for my working set. I had other programs that required me to 'max out' in reps.
Currently when I deadlift, I am doing high reps. I do this at a lower weight I know I can handle without breaking my form. So when you see in my workouts "8 reps for deadlifts," I am probably using a weight that's about 60 percent or under of my max.
When you deadlift, do you have a certain number of reps/sets you perform?
Also if anyone has any questions about deadlifts, please let me know! I'd more than happy to answer them. :-)